101212200220 has 24 divisors (see below), whose sum is σ = 212558599008. Its totient is φ = 40482408000.

The previous prime is 101212200211. The next prime is 101212200241. The reversal of 101212200220 is 22002212101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101212200220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201190 + ... + 492850.

It is an arithmetic number, because the mean of its divisors is an integer number (8856608292).

Almost surely, 2^101212200220 is an apocalyptic number.

101212200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212200220 is an abundant number, since it is smaller than the sum of its proper divisors (111346398788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101212200220 is a wasteful number, since it uses less digits than its factorization.

101212200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309021 (or 309019 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 101212200220 its reverse (22002212101), we get a palindrome (123214412321).

The spelling of 101212200220 in words is "one hundred one billion, two hundred twelve million, two hundred thousand, two hundred twenty".